diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 15f848c..389d264 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -1,5 +1,5 @@
 # Contributing to HTML Ruby Markup Extensions
 
-See the [Communication](https://www.w3.org/2022/06/html-wg-charter.html#communication)
-and [Decision Policy](https://www.w3.org/2022/06/html-wg-charter.html#decisions) sections
-of the [HTML Working Group](https://www.w3.org/groups/wg/htmlwg/)’s charter.
+See the [Communication](https://www.w3.org/International/groups/wg/charter#communication)
+and [Decision Policy](https://www.w3.org/International/groups/wg/charter#decisions) sections
+of the [Internationalization Working Group](https://www.w3.org/groups/wg/i18n-core/)’s charter.
diff --git a/LICENSE.md b/LICENSE.md
index 3ac7035..13335ce 100644
--- a/LICENSE.md
+++ b/LICENSE.md
@@ -1,4 +1,20 @@
-All documents in this repository are licensed by contributors under
-the [Creative Commons Attribution International 4.0 (CC BY 4.0) copyright license](https://creativecommons.org/licenses/by/4.0/)
-as per the [Licensing](https://www.w3.org/2022/06/html-wg-charter.html#licensing) section
-of the [HTML Working Group](https://www.w3.org/groups/wg/htmlwg)’s charter.
+# License 
+
+Unless otherwise noted,
+new contributions to this repository are made available by their authors
+under the [W3C Software and Document License](https://www.w3.org/copyright/software-license-2023/),
+in accordance with the [Licensing section](https://www.w3.org/International/groups/wg/charter#licensing)
+of the [W3C Internationalization Working Group](https://www.w3.org/groups/wg/i18n-core/) charter.
+
+This repository also contains material that was previously developed
+in the [HTML Working Group](https://www.w3.org/groups/wg/htmlwg/)
+and published under the [Creative Commons Attribution 4.0 International License (CC BY 4.0)](https://creativecommons.org/licenses/by/4.0/),
+as required by that group’s [Licensing section](https://www.w3.org/2022/06/html-wg-charter.html#licensing).
+
+Portions of this work are derived from material originally published by the
+WHATWG under the CC BY 4.0 license; those portions remain available under that
+license.
+
+Accordingly, this repository contains material available under both licenses.
+Source documents indicate the applicable license or licenses
+for their specific content.
diff --git a/Overview.bs b/Overview.bs
index 6a0958a..c26a934 100644
--- a/Overview.bs
+++ b/Overview.bs
@@ -3,7 +3,7 @@ Title: HTML Ruby Markup Extensions
 Shortname: html-ruby-extensions
 Level: None
 Status: ED
-Group: htmlwg
+Group: i18n
 Repository: w3c/html-ruby
 TR: https://www.w3.org/TR/html-ruby-extensions/
 ED: https://w3c.github.io/html-ruby/
@@ -23,6 +23,18 @@ Status Text:
 	between W3C and the WHATWG.
 </pre>
 
+<div boilerplate="copyright">
+	<a href="https://www.w3.org/policies/#copyright">Copyright</a> © [YEAR]
+	<a href="https://www.w3.org/">World Wide Web Consortium</a> and WHATWG (Apple, Google, Mozilla, Microsoft).
+	<abbr title="World Wide Web Consortium">W3C</abbr><sup>®</sup> <a href="https://www.w3.org/policies/#Legal_Disclaimer">liability</a>, and <a href="https://www.w3.org/policies/#W3C_Trademarks">trademark</a> rules apply.
+	This work is made available under a dual license:
+	the <a href="https://creativecommons.org/licenses/by/4.0/">Creative Commons Attribution 4.0 International License</a> (CC BY 4.0),
+	and the <a href="https://www.w3.org/copyright/software-license-2023/">W3C Software and Document license</a>.
+	Portions of this work are derived from material originally published by the WHATWG
+	under the CC BY 4.0 license;
+	those portions remain available under that license.
+</div>
+
 <pre class="anchors">
 	spec: html; urlPrefix: https://html.spec.whatwg.org/multipage/
 		type:dfn; for:/; text:text; url: dom.html#text-content
diff --git a/README.md b/README.md
index da1696b..58a337c 100644
--- a/README.md
+++ b/README.md
@@ -3,6 +3,8 @@
 This repository hosts the [HTML Ruby Markup Extensions specification](https://www.w3.org/TR/html-ruby-extensions/)
 as per the [Agreement on HTML Ruby Markup](https://www.w3.org/2022/02/ruby-agreement.html)
 between W3C and the WHATWG,
-and as [listed among the chartered deliverables](https://www.w3.org/2022/06/html-wg-charter.html#ruby) of the [HTML Working Group](https://www.w3.org/groups/wg/htmlwg/).
+and as previously[listed among the chartered deliverables](https://www.w3.org/2022/06/html-wg-charter.html#ruby) of the now expired[HTML Working Group](https://www.w3.org/groups/wg/htmlwg/),
+and as <a href="https://www.w3.org/2025/12/04-i18n-minutes.html#900b">adopted</a> by the [Internationalization Working Group](https://www.w3.org/groups/wg/i18n-core/)
+(confirmed by <a href="https://github.com/w3c/transitions/issues/758">by transition request #758</a>).
 
 It may also be used to host some related [documentation](docs/) and [exploratory work](/explainers).
diff --git a/w3c.json b/w3c.json
index 0486790..97f70c2 100644
--- a/w3c.json
+++ b/w3c.json
@@ -1,8 +1,9 @@
 {
-    "group": "wg/htmlwg",
+    "group": "wg/i18n-core",
     "contacts": [
-        "siusin",
-        "LJwatson",
+        "r12a",
+        "xfq",
+        "aphillips",
         "frivoal"
     ],
     "repo-type": "rec-track"